Earth's Moon: Formation, Composition and Orbit
Scientists say a giant impact knocked off the raw ingredients for the moon off the primitive molten Earth and into orbit.
A new study should help future missions determine how deep to dig for life on Europa.
A rotating cast of temporary minimoons join the iconic body beloved by poets and romantics.
The new moon will leave the skies dark and great for viewing.
From water on Mars to fake feline astronauts, it's been a busy week in space. Vote for the week's best space story.
Permanently shadowed craters near the moon's poles likely hold vast stores of water ice.
The idea that a protoplanet called Theia formed the moon is under question.
The Messenger spacecraft began a one-year bonus mission at Mercury, and the twin Grail probes will get 90 more days at the moon.
Io is the most volcanically active object in the solar system.
Photos from NASA's Lunar Reconnaissance Orbiter animate videos showing the moon in a whole new light.
The nation also wants to send spacecraft to Venus, Mars and Jupiter by 2030.
Skywatchers can spot the full moon, Venus, Jupiter, Mercury and perhaps even Uranus tonight.
See our fantastic skywatcher-submitted photos of the moon and Mars close together in March 2012! Wow!
A new study examines how the moon settled into its current synchronous orbit.
The Grail probes' measurements should help scientists learn about the moon's structure and evolution.
In this space wallpaper, sunlight reflects off the Earth and shines upon the moon, gaining the name "earthshine."
This week offers a great view of two celestial heavyweights close together.
The first footprints put on the moon will probably be there a long, long time.